Interprocess communication via pipes (#2009)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Use 'Process' to communicate with an command line tool.

* Remove slang-win-stream

* Tidy up windows ProcessUtil.

* First version of BufferedReadStream.

* Windows working IPC for steams.

* Test proxy count option.

* Split Process/ProcessUtil. Process is platform dependant. ProcessUtil are functions that are platform independent.

* First implementation of Unix Process interface.

* Unix process compiles on cygwin.

* Fix typo in unix process.

* Separate unix pipe stream error of invalid access, from pipe availability.

* Fix in standard line extraction.

* Make fd non blocking.

* Fix issues with Windows Process streams.

* Added UnixPipe.

* Some fixes around UnixPipeStream.

* Make a unix stream closed explicit.

* Hack to debug linux process/stream.

* Revert to old linux pipe handling.

* Pass executable path for unit tests.
Split out CommandLine into own source.

* Small improvements in process/command line.

* Check process behavior with crash.

* Make stderr and stdout unbuffered for crash testing.

* Only turn disable buffering in crash test.

* Disable crash test on CI.

* Fix crash on clang/linux.

* Enable crash test.
Remove _appendBuffer as can use StreamUtil functionality.

4 files changed, 22 insertions, 2 deletions

diff --git a/build/visual-studio/core/core.vcxproj b/build/visual-studio/core/core.vcxproj
index 777bf4dd3..2b54e3785 100644
--- a/build/visual-studio/core/core.vcxproj
+++ b/build/visual-studio/core/core.vcxproj
@@ -285,6 +285,7 @@
     <ClInclude Include="..\..\..\source\core\slang-char-util.h" />
     <ClInclude Include="..\..\..\source\core\slang-chunked-list.h" />
     <ClInclude Include="..\..\..\source\core\slang-com-object.h" />
+    <ClInclude Include="..\..\..\source\core\slang-command-line.h" />
     <ClInclude Include="..\..\..\source\core\slang-common.h" />
     <ClInclude Include="..\..\..\source\core\slang-compression-system.h" />
     <ClInclude Include="..\..\..\source\core\slang-deflate-compression-system.h" />
@@ -304,6 +305,7 @@
     <ClInclude Include="..\..\..\source\core\slang-offset-container.h" />
     <ClInclude Include="..\..\..\source\core\slang-platform.h" />
     <ClInclude Include="..\..\..\source\core\slang-process-util.h" />
+    <ClInclude Include="..\..\..\source\core\slang-process.h" />
     <ClInclude Include="..\..\..\source\core\slang-random-generator.h" />
     <ClInclude Include="..\..\..\source\core\slang-render-api-util.h" />
     <ClInclude Include="..\..\..\source\core\slang-riff-file-system.h" />
@@ -337,6 +339,7 @@
     <ClCompile Include="..\..\..\source\core\slang-byte-encode-util.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-char-encode.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-char-util.cpp" />
+    <ClCompile Include="..\..\..\source\core\slang-command-line.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-deflate-compression-system.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-file-system.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-free-list.cpp" />
@@ -346,6 +349,7 @@
     <ClCompile Include="..\..\..\source\core\slang-memory-arena.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-offset-container.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-platform.cpp" />
+    <ClCompile Include="..\..\..\source\core\slang-process-util.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-random-generator.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-render-api-util.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-riff-file-system.cpp" />
@@ -367,7 +371,7 @@
     <ClCompile Include="..\..\..\source\core\slang-uint-set.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-writer.cpp" />
     <ClCompile Include="..\..\..\source\core\slang-zip-file-system.cpp" />
-    <ClCompile Include="..\..\..\source\core\windows\slang-win-process-util.cpp" />
+    <ClCompile Include="..\..\..\source\core\windows\slang-win-process.cpp" />
   </ItemGroup>
   <ItemGroup>
     <Natvis Include="..\..\..\source\core\core.natvis" />
diff --git a/build/visual-studio/core/core.vcxproj.filters b/build/visual-studio/core/core.vcxproj.filters
index 639886474..31322c04f 100644
--- a/build/visual-studio/core/core.vcxproj.filters
+++ b/build/visual-studio/core/core.vcxproj.filters
@@ -42,6 +42,9 @@
     <ClInclude Include="..\..\..\source\core\slang-com-object.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\source\core\slang-command-line.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\..\source\core\slang-common.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -99,6 +102,9 @@
     <ClInclude Include="..\..\..\source\core\slang-process-util.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\source\core\slang-process.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\..\source\core\slang-random-generator.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -194,6 +200,9 @@
     <ClCompile Include="..\..\..\source\core\slang-char-util.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\source\core\slang-command-line.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\source\core\slang-deflate-compression-system.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -221,6 +230,9 @@
     <ClCompile Include="..\..\..\source\core\slang-platform.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\source\core\slang-process-util.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\source\core\slang-random-generator.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -284,7 +296,7 @@
     <ClCompile Include="..\..\..\source\core\slang-zip-file-system.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\..\source\core\windows\slang-win-process-util.cpp">
+    <ClCompile Include="..\..\..\source\core\windows\slang-win-process.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
   </ItemGroup>
diff --git a/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj b/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj
index 6d0fe41e8..c8eadc484 100644
--- a/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj
+++ b/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj
@@ -280,6 +280,7 @@
     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-json.cpp" />

     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-memory-arena.cpp" />

     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-path.cpp" />

+    <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-process.cpp" />

     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-riff.cpp" />

     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-short-list.cpp" />

     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-string.cpp" />

diff --git a/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj.filters b/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj.filters
index 148a94a40..2578a8736 100644
--- a/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj.filters
+++ b/build/visual-studio/slang-unit-test-tool/slang-unit-test-tool.vcxproj.filters
@@ -41,6 +41,9 @@
     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-path.cpp">

       <Filter>Source Files</Filter>

     </ClCompile>

+    <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-process.cpp">

+      <Filter>Source Files</Filter>

+    </ClCompile>

     <ClCompile Include="..\..\..\tools\slang-unit-test\unit-test-riff.cpp">

       <Filter>Source Files</Filter>

     </ClCompile>